Seiko Cal. 6641 - 903

The Seiko 6641-903 represents an important milestone in Seiko's 1994 lineup. It features a Green dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-c014056dab98]

Also known as: Sumo, Silverwave

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

13.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1994

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